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Discussion Starter · #1 · (Edited)
Somehow I managed to lose the o-ring on my Octane 45 piston. This is one of those feats I have a real penchant for...especially since it hasn't been any where besides the safe and my desk. I ordered up a couple Silencerco replacements. So I'm covered for now. My question is, what are the dimensions of the Viton o-ring and is there a cheaper bulk option? I don't plan on losing another one. But then again, I didn't plan on losing the first. Plus I look forward to wearing them out the old fashioned way in the near future.
 
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Discussion Starter · #3 ·
They are M16
Many thanks. Like I said, I ordered a couple of replacements from you fine folks earlier. Hopefully I won't need any anytime soon.
 
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Check out McMaster-Carr (McMaster-Carr). They make the O-rings that silencer companies use and markup and sell as replacements. You just have to Google the McMaster-Carr part number for you silencer. Like part number 9263K598 for a Ti-Rant 45 end cap is $7.21 per pack of 10. A long time ago I ordered every O-Ring used in my silencer collection and I still have bunches left.
 

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I think I ordered 100 and 75 O-rings that fit my Osprey and Sparrow from McMaster-Carr. Shipping price is kind of stupid, but still way cheaper in the long run than buying a few. I noticed my Osprey piston tends to chew up the O-ring when I clean it, so that will get replaced at least a couple times a year (so, I may run out of them by the time I'm 75).
 
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Discussion Starter · #7 · (Edited)
maybe it wasn't there in the first place. are you sure that you lost it?
Well, now I'm second guessing myself. I could have sworn it was there when I unboxed everything. But I got two Octanes/pistons at the same time, and one o-ring wasn't seated in the groove all the way. So I know that one had one. But I have been fairly scatterbrained lately...so who knows? This is the .578x28 piston on the Octane 45. The other is M13.5x1 LH on the Octane 9 (still has o-ring).
 
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Discussion Starter · #10 ·
I would say one of your cats is the culprit one of them hauled it off when your weren't looking!:lol::-D
This is always a distinct possibility.

A few years back, I had stripped down a Sig556. When I went to put it back together...no charging handle. I tore apart my office looking for it. I finally gave up and called Sig. I told them I thought that my cat may have run off with it, they comped me one...and laughed at me. A month or so later I found the original...in the guest room...on the other side of the house...as far from my desk as you can get without leaving the place. There's still a 5.56 snap cap somewhere under this roof. That's going on 5 years missing.
 
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